Miscellaneous fixes for DHCP server, bridge ports, and CI

.github/workflows/generic-x86-build.yml

@@ -10,6 +10,17 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Free Disk Space
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: true
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          docker-images: true
+          swap-storage: false
+
       - name: Install build dependencies
         run: |
           sudo apt-get update

doc/ChangeLog.md

@@ -3,7 +3,7 @@ Change Log
 
 All notable changes to the project are documented in this file.
 
-[v25.10.0][UNRELEASED] - 
+[v25.10.0][] - 2025-10-31
 -------------------------
 
 ### Changes
@@ -31,6 +31,13 @@ All notable changes to the project are documented in this file.
 
 - Fix #981: copying any file, including `running-config`, to the persistent
   back-end store for `startup-config`, does not take
+- Fix #1121: Ensure DHCP server does not crash if no address pool is set.  This
+  change infers a pool range (only) for /24 networks, and only when a pool is
+  enabled.  YANG validation for this and other use-cases is also included.  As
+  an unforeseen bonus, Infix now also support non-pool (static lease) setups
+- Fix #1122: Add YANG validation for consistency, IP addresses are not allowed
+  on bridge port (interfaces).  Even though Infix previously allowed this, but
+  disregarded it operationally, it is no longer supported in the configuration
 - Fix #1146: Possible to set longer containers names than the system supports.
   Root cause, a limit of 15 characters implicitly imposed by the service mgmt
   daemon, Finit.  The length has not been increased to 64 characters (min: 2)

patches/libyang/3.13.5/0001-lyd_validate_obsolete-change-log-level-warning-debug.patch

@@ -1,4 +1,4 @@
-From 4603d09f5d1bd9ca0a1d4467d30a71528c8e2df4 Mon Sep 17 00:00:00 2001
+From 50a8a5c0d07de5f72323be6d9ba1d1b78fdc6b9b Mon Sep 17 00:00:00 2001
 From: Joachim Wiberg <troglobit@gmail.com>
 Date: Mon, 1 Sep 2025 14:24:03 +0200
 Subject: [PATCH] lyd_validate_obsolete: change log level warning -> debug
@@ -46,15 +46,15 @@ index 85f2ac6d4..2bbb0b19b 100644
  /**
   * @}
 diff --git a/src/validation.c b/src/validation.c
-index 25be0feeb..8e308c61f 100644
+index 25be0feeb..86b82dbff 100644
 --- a/src/validation.c
 +++ b/src/validation.c
 @@ -1624,7 +1624,7 @@ lyd_validate_obsolete(const struct lyd_node *node)
          if (snode->flags & LYS_STATUS_OBSLT &&
                  (!(snode->nodetype & LYD_NODE_INNER) || lyd_child(node))) {
              LOG_LOCSET(NULL, node);
 -            LOGWRN(snode->module->ctx, "Obsolete schema node \"%s\" instantiated in data.", snode->name);
-+            LOGDBG(LY_LDGSCHEMA, snode->module->ctx, "Obsolete schema node \"%s\" instantiated in data.", snode->name);
++            LOGDBG(LY_LDGSCHEMA, "%s: obsolete schema node \"%s\" instantiated in data.", snode->module->name, snode->name);
              LOG_LOCBACK(0, 1);
              break;
          }

src/confd/src/infix-dhcp-server.c

@@ -223,10 +223,12 @@ static void add(const char *subnet, struct lyd_node *cfg)
 		start = lydx_get_cattr(node, "start-address");
 		end   = lydx_get_cattr(node, "end-address");
 
-		fprintf(fp, "\n# Subnet pool %s - %s\n", start, end);
-		fprintf(fp, "dhcp-range=%s%sset:%s,%s,%s,%s\n",
-			ifname ?: "", ifname ? "," : "", tag,
-			start, end, lydx_get_cattr(node, "lease-time"));
+		if (start && end) {
+			fprintf(fp, "\n# Subnet pool %s - %s\n", start, end);
+			fprintf(fp, "dhcp-range=%s%sset:%s,%s,%s,%s\n",
+				ifname ?: "", ifname ? "," : "", tag,
+				start, end, lydx_get_cattr(node, "lease-time"));
+		}
 	}
 
 err:
@@ -400,6 +402,7 @@ static int cand(sr_session_ctx_t *session, uint32_t sub_id, const char *module,
 		"router",
 		"dns-server",
 	};
+	sr_val_t *subnets = NULL;
 	size_t i, cnt = 0;
 
 	if (event != SR_EV_UPDATE && event != SR_EV_CHANGE)
@@ -413,6 +416,37 @@ static int cand(sr_session_ctx_t *session, uint32_t sub_id, const char *module,
 		srx_set_item(session, &inferred, 0, fmt, opt[i]);
 	}
 
+	/* Infer pool: .100 to .250 for /24 networks */
+	if (sr_get_items(session, CFG_XPATH "/subnet/subnet", 0, 0, &subnets, &cnt) == 0) {
+		for (i = 0; i < cnt; i++) {
+			const char *pool_xpathfmt = CFG_XPATH "/subnet[subnet='%s']/pool";
+			const char *host_xpathfmt = CFG_XPATH "/subnet[subnet='%s']/host";
+			const char *subnet = subnets[i].data.string_val;
+			sr_val_t pool_val = { .type = SR_STRING_T };
+			char start_addr[16], end_addr[16];
+			unsigned int a, b, c, d, len;
+			size_t pool_cnt = 0, host_cnt = 0;
+
+			if (sscanf(subnet, "%u.%u.%u.%u/%u", &a, &b, &c, &d, &len) != 5 || len != 24)
+				continue;
+
+			/* Don't auto-infer if pool or static hosts already exist */
+			if (!srx_nitems(session, &pool_cnt, pool_xpathfmt, subnet) && pool_cnt)
+				continue;
+			if (!srx_nitems(session, &host_cnt, host_xpathfmt, subnet) && host_cnt)
+				continue;
+
+			snprintf(start_addr, sizeof(start_addr), "%u.%u.%u.100", a, b, c);
+			snprintf(end_addr, sizeof(end_addr), "%u.%u.%u.250", a, b, c);
+
+			pool_val.data.string_val = start_addr;
+			srx_set_item(session, &pool_val, 0, CFG_XPATH "/subnet[subnet='%s']/pool/start-address", subnet);
+			pool_val.data.string_val = end_addr;
+			srx_set_item(session, &pool_val, 0, CFG_XPATH "/subnet[subnet='%s']/pool/end-address", subnet);
+		}
+		sr_free_values(subnets, cnt);
+	}
+
 	return 0;
 }
 

src/confd/yang/confd.inc

@@ -27,7 +27,7 @@ MODULES=(
 	"infix-lldp@2025-05-05.yang"
 	"infix-dhcp-common@2025-01-29.yang"
 	"infix-dhcp-client@2025-01-29.yang"
-	"infix-dhcp-server@2025-01-29.yang"
+	"infix-dhcp-server@2025-10-28.yang"
 	"infix-firewall@2025-04-26.yang"
 	"infix-firewall-services@2025-04-26.yang"
 	"infix-firewall-icmp-types@2025-04-26.yang"

src/confd/yang/confd/infix-dhcp-server.yang

@@ -20,6 +20,13 @@ module infix-dhcp-server {
   contact      "kernelkit@googlegroups.com";
   description  "This module implements a DHCPv4 server";
 
+  revision 2025-10-28 {
+    description "Make pool a presence container and add pool validation.
+                 Also, require each subnet to have either a pool or
+                 at least one static host entry.";
+    reference   "internal";
+  }
+
   revision 2025-01-29 {
     description "Initial revision adapted for Infix from DHCPv6 model.";
     reference   "internal";
@@ -132,6 +139,10 @@ module infix-dhcp-server {
       description "Subnet specific settings, including static host entries.";
       key "subnet";
 
+      must "pool or host" {
+        error-message "Subnet must have either a pool or at least one static host entry.";
+      }
+
       leaf subnet {
         description "Subnet to serve DHCP leases from.";
         type inet:ipv4-prefix;
@@ -160,8 +171,13 @@ module infix-dhcp-server {
       }
 
       container pool {
+        presence "Enable dynamic DHCP address pool for this subnet.";
         description "IP address pool for this subnet.";
 
+        must "start-address and end-address" {
+          error-message "Both start-address and end-address must be set if pool is configured.";
+        }
+
         leaf start-address {
           description "The start address of the DHCP address pool.";
           type inet:ipv4-address;

src/confd/yang/confd/infix-if-bridge.yang

@@ -15,6 +15,9 @@ submodule infix-if-bridge {
   import ietf-interfaces {
     prefix if;
   }
+  import ietf-ip {
+    prefix ip;
+  }
   import ieee802-dot1q-types {
     prefix dot1q-types;
   }
@@ -26,6 +29,10 @@ submodule infix-if-bridge {
   contact      "kernelkit@googlegroups.com";
   description  "Linux bridge extension for ietf-interfaces.";
 
+  revision 2025-10-28 {
+    description "Prevent IP addresses on bridge ports.";
+    reference "internal";
+  }
 
   revision 2025-10-23 {
     description "Add WiFi interfaces to be able to be added to a bridge.";
@@ -918,6 +925,9 @@ submodule infix-if-bridge {
       description "Extension of the IETF Interfaces model (RFC7223).";
 
       container bridge-port {
+        must "not(../ip:ipv4/ip:address or ../ip:ipv6/ip:address)" {
+          error-message "Bridge ports cannot have IP addresses configured.";
+        }
         description "Bridge association and port specific settings.";
         uses bridge-port-common;
         uses bridge-port-lower {

test/docker/pip-requirements.txt

@@ -6,4 +6,8 @@ pydot==1.4.2
 pyyaml==6.0.1
 passlib==1.7.4
 requests~=2.32.4
+# GHSA-cq46-m9x9-j8w2: scapy <=2.6.1 has pickle deserialization vuln in session
+# loading (-s flag). Low risk: test framework only uses packet crafting (Ether,
+# sendp, LLDP), not session loading. Update to 2.7.0+ when available on PyPI.
+# https://github.com/advisories/GHSA-cq46-m9x9-j8w2
 scapy==2.6.1